@misc{indiciae09bf5ca5358d,
  title = {Paleocene and Eocene strata in the Bearpaw Mountains, Montana},
  author = {R.W. Brown and W. T. Pecora},
  year = {1949},
  doi = {10.1126/science.109.2837.487},
  url = {https://pubs.usgs.gov/publication/70010867},
  note = {Source identifier: 70010867}
}